SMT PLANAR TRANSFORMER
AND PLANAR INDUCTOR
For use with Linear Technology’s
PLANAR TRANSFORMER – PA0191
LT1681 and LTC1698
Power Rating: 60-100W
Height: 8.3 mm Max
Footprint: 27.7 mm x 21.8 mm Max
PLANAR INDUCTOR – P1977
Energy Storage: 420 µJ (2.1 µH/20A)
Height: 8.3 mm Max
Footprint: 21.7 mm x 20.3 mm Max
Electrical Specifications @ 25°C — Operating Temperature -40°C to 125°C
Primary
Secondary
Isolation
Primary
Inductance
(µH MIN)
Leakage
Inductance
(µH MAX)
DCR
Primary Aux.
(mΩ MAX)
Part
Number
Power
Turns Ratio
(with 7T Pri. Aux.)
Primary
(mΩ MAX)
Secondary
(mΩ MAX)
Rating 1
PA0191
60-100 W
9:2
1500 Vdc Basic
100
1.5
85
800
2.5
Electrical Specifications @ 25°C — Operating Temperature -40°C to 125°C
DCR
Saturation Current 3
Irated 2
Inductance
Inductance
Heating
Current 4
(A)
Part
Number
(mΩ)
(A)
@Irated
@ 0 A
DC
(ADC
)
(µH 5ꢀ)
(µH 5ꢀ)
TYP
MAX
@ 25°C
@ 125°C
P1977
2.1
20
1.00
1.25
2.1
27.0
22.5
31
Mechanicals
Schematics
.530
PA0191
.530
13,46
13,46
.305
7,75
.100
2,54
2X
.060
4X
.100
2,54
.265
2X
1,52
6,73
PIN 2
.080
2,03
4XØ
1
2
3
4
.235
5,97
9T
2T
7T
PIN 1
PIN 4
PIN 3
7
5
.915
23,24
1.090
27,69
MAX
.915
23,24
.551
14,00
PA0191
Date Code
Country of Origin
.405
10,29
PIN 7
PIN 5
.100
2,54
.180
4,57
2X
Ø
.150
3,81
.180
4,57
.360
9,14
2X
.325
8,26
MAX
.360
9,14
.860
MAX
21,84
.005/0,13
4 SURFACES
SUGGESTED PAD LAYOUT
P1977
1
3T
2
.800
20,32
MAX
PA0191
Date Code
Country of Origin
.360
9,14
.360
9,14
PA0191
P1977
Weight ..................11.0 grams ..................10.8 grams
Tape & Reel...............150/reel.......................150/reel
Tray.............................55/tray.........................48/tray
PIN 1
PIN 2
1
2
.275
6,99
.275
6,99
.325
8,26
MAX
.150
3,81
2X
Inches
mm
Dimensions:
.005/0,13
3 SURFACES
SUGGESTED PAD LAYOUT
.855
21,72
MAX
.010
0,25
Unless otherwise specified, all tolerances are
•
•
•
•
•
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P553.A (7/02)